Did you mean the game window?
The abbreviation of heads-up display. These icons show up if your character is either an antagonist, or wearing a 
Security HUD or a 
Health Scanner HUD.
Antagonist HUD Icons
These are the icons that display over some persons under certain circumstances.
| Icon | Description |
|---|---|
 |
Revolutionary. Can only be seen by other revs. |
 |
Head Revolutionary. Can only be seen by other revs. |
|
Cultist. Can only be seen by other cultists. |
|
Syndicate Operative. Can only be seen by other operatives during Nuke |
Security HUD Icons
These are the icons that display over all persons while you are wearing a Security HUD.
| Icon | Description |
|---|---|
|
Captain |
|
Head of Personnel |
|
Head of Security |
|
Detective |
|
Security Officer |
|
Warden |
|
Chief Engineer |
|
Station Engineer |
|
Atmospheric Technician |
|
Janitor |
|
Quartermaster |
|
Cargo Technician |
|
Shaft Miner |
|
Research Director |
|
Chief Medical Officer |
|
Botanist |
|
Chemist |
|
Geneticist |
|
Medical Doctor |
|
Virologist |
|
Roboticist |
|
Scientist |
|
Barman |
|
Chaplain |
|
Chef |
|
Clown |
|
Mime |
|
Lawyer |
|
Librarian |
|
Assistant |
|
Wanted |
|
Prisoner |
|
No ID/Unrecognized Rank |
|
Tracking Implanted |
|
Loyalty Implanted |
Medical HUD Icons
These are the icons that display over all persons while you are wearing a Health Scanner HUD.
| Icon | Description |
|---|---|
|
|
No Viruses Detected. |
|
Virus Detected |
|
Unknown Lifeform Detected |
|
Deceased |